Features

• Whole-home fan-powered humidifier
• Perfect for homes heated with boilers, mini-splits, radiant heat, and other ductless systems
• Simple mounting and installation
• Our quietest self-contained evaporative humidifier*
• 30% more capacity than our Model 350 humidifier
• Quick water panel replacement at bottom of unit
• Ducted return and ducted supply available
• Includes Model 65 digital humidistat
• Includes saddle value, 6' power cord, mounting brackets, 10" to 8" reducer 
• 5-year warranty

Specifications

• Capacity: 13 gpd at 80 ft. effective hard duct length for homes up to 3,500 sq ft with tight construction (Based on AHRI Guideline F Humidifier Sizing. Can satisfy a 2,000 sq ft home with average construction.)
• Voltage, phase, frequency: 120VAC, 1 phase, 60 Hz
• Airflow @ varying E.S.P. (external static pressure - dry coil): 0.0" w.c. - 270 CFM, 0.1" w.c - 255 CFM, 0.15" w.c - 250 CFM, 0.2" w.c. – 245 CFM
• Current draw: 0.7 Amps
• Noise: 55 dBA (hard duct) 49.5 dBA (flex duct)
• Dimensions: (cabinet only): Width: 14 3/8", Height: 12 1/2", Length: 22 3/32"
• Weight: 29.2 lbs
• Inlet air operating conditions: Minimum 65°F 
• Inlet air operating conditions: Minimum 120°F
• Note: Rated capacity, energy factor and current draw measured at 80°F/60% RH inlet air at 0.0 ESP. Height does not include adjustable feet. The width excludes the filter doors and length excludes the duct collars.

The Aprilaire 300 Series is a whole-home, fan-powered evaporative humidifier designed to draw air into the unit with a fan and undergoes evaporative humidification by passing incoming air over a wetted water panel. Humidification continues until the set point is reached. A time delay function keeps the fan blowing for several minutes after a humidity call is complete to dry out the water panel. When humidity as sensed by the humidistat drops below the set point, the humidifier begins another humidity cycle. The 300 Series is perfect for humidifying homes that do not have forced air systems. The unit is easily mounted onto joists and the duct can be fed into the living space through a grille. The unit can be mounted off the joists or in between joists which are spaced at least 14.5" apart. Hard duct or flex duct can be used. The sound of the unit decreases when using flex duct.